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Stenka25 Posted 11 years ago
Grammar
Why Future Perfect Tense?
Why Future Perfect Tense?
The passage from a book, The Edible Balcony: Growing Fresh Produce in Small Spaces.
https://books.google.co.kr/books?id=9Znv-k_bwqsC&pg=PA12&lpg=PA12&dq=%22Balconies+are+generally+constructed+to+support+the+weight%22&source=bl&ots=XEDnaP8OJ-&sig=DZol7A0Y72MdPLH2Nu_XmKUpXe0&hl=en&sa=X&ved=0CBwQ6AEwAGoVChMI2uqyu6_AxwIVwp-UCh39mgc3#v=onepage&q=%22Balconies%20are%20generally%20constructed%20to%20support%20the%20weight%22&f=false
Balconies are generally constructed to support the weight of people, so a few pots are usually not going to be a problem. If you're worried, though, use lightweight pots, such as plastic liners hidden by woven willow baskets, and site them nearer to the house or over load-bearing supports. Similarly, roof terraces will also have been designed to withstand large loads and should have no trouble holding up the number of potted plants you'd expect in an average domestic setting. However, if you're thinking of more ambitious projects, such as raised beds, or laying soil over the whole roof, it's a good idea to consult a surveyor or structural engineer first.
I'd like to ask why the underlined sentence has a future perfect tense.
I checked out several websites to make sure what the future perfect tense is.
Here is what I found.
http://thegrammarexchange.infopop.cc/eve/forums/a/tpc/f/340600179/m/5331051674
With the future perfect, you jump into the future (anticipate) and look back at what HAS happened BEFORE/BY that time in the future.
? You can call me at work at 8 am. I will have arrived at the office by 8.
? Before they come, we are going to have cleaned up the house.
? I am not going to have finished this test by 3 o'clock.
But I still cannot see why the passage in question has a future perfect tense.
Is there any specific reason for the use of this unusual tense, or what?
(To my grammatical sense replacing the underlined part with 'can also be designed' would be OK in this context. Am I right?)
Hope for your replies.
Regards.
The passage from a book, The Edible Balcony: Growing Fresh Produce in Small Spaces.
https://books.google.co.kr/books?id=9Znv-k_bwqsC&pg=PA12&lpg=PA12&dq=%22Balconies+are+generally+constructed+to+support+the+weight%22&source=bl&ots=XEDnaP8OJ-&sig=DZol7A0Y72MdPLH2Nu_XmKUpXe0&hl=en&sa=X&ved=0CBwQ6AEwAGoVChMI2uqyu6_AxwIVwp-UCh39mgc3#v=onepage&q=%22Balconies%20are%20generally%20constructed%20to%20support%20the%20weight%22&f=false
Balconies are generally constructed to support the weight of people, so a few pots are usually not going to be a problem. If you're worried, though, use lightweight pots, such as plastic liners hidden by woven willow baskets, and site them nearer to the house or over load-bearing supports. Similarly, roof terraces will also have been designed to withstand large loads and should have no trouble holding up the number of potted plants you'd expect in an average domestic setting. However, if you're thinking of more ambitious projects, such as raised beds, or laying soil over the whole roof, it's a good idea to consult a surveyor or structural engineer first.
I'd like to ask why the underlined sentence has a future perfect tense.
I checked out several websites to make sure what the future perfect tense is.
Here is what I found.
http://thegrammarexchange.infopop.cc/eve/forums/a/tpc/f/340600179/m/5331051674
With the future perfect, you jump into the future (anticipate) and look back at what HAS happened BEFORE/BY that time in the future.
? You can call me at work at 8 am. I will have arrived at the office by 8.
? Before they come, we are going to have cleaned up the house.
? I am not going to have finished this test by 3 o'clock.
But I still cannot see why the passage in question has a future perfect tense.
Is there any specific reason for the use of this unusual tense, or what?
(To my grammatical sense replacing the underlined part with 'can also be designed' would be OK in this context. Am I right?)
Hope for your replies.
Regards.
Top answer
Similarly, roof terraces will also have been designed to withstand large loads and should have no trouble holding up the number of potted plants you'd expect in an average domestic setting. It is advice that is expected to be valid in the present as well as the future. Present roof terraces are designed to handle loads, and that is valid for future roof terraces also.
- Similarly, roof terraces will also have been designed to withstand large loads and should have no trouble holding up the number of potted plants you'd expect in an average domestic setting.
- It is advice that is expected to be valid in the present as well as the future.
- Present roof terraces are designed to handle loads, and that is valid for future roof terraces also.
- So suppose sometime in the future you want to install a garden on your roof terrace.
- You can be assured that it has been designed to support the weight.
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3 Answers
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Similarly, roof terraces will also have been designed to withstand large loads and should have no trouble holding up the number of potted plants you'd expect in an average domestic setting.
It is advice that is expected to be valid in the present as well as the future. Present roof terraces are designed to handle loads, and that is valid for future roof terraces also.
It is advice that is expected to be valid in the present as well as the future. Present roof terraces are designed to handle loads, and that is valid for future roof terraces also.
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Stenka25I'd like to ask why the underlined sentence has a future perfect tense.I would not call it a future perfect here. The writer is using 'will' as an assertion of certainty. Here are a couple of examples, one perfect, one not:
The flight to London takes only ninety minutes. Luke's plane will have landed half an hour ago. He will be on the shu
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